// https://forum.arduino.cc/t/circular-matrix/1164773/6

// https://forum.arduino.cc/t/led-gyro-ball-diy-help/1239872
// https://www.youtube.com/watch?v=Q5d8gTppuYo
// https://www.instructables.com/RGB-LED-Sphere/
// https://youtu.be/DMBejIlcKSM

#include <FastLED.h>
//
#define STRINGS 16
#define STRING_SIZE 16
#define NUM_LEDS (STRINGS * STRING_SIZE)
#define MATRIX_PIN 2
#define BRIGHTNESS 255 // max brightness
//
CRGB leds[NUM_LEDS];
//
//#define BUTTON 3
CRGB pattern1[] = {
CRGB(0xFF, 0xC0, 0xFF),//LIGHT_RED          
CRGB(0xFF, 0x00, 0x00),//RED                
CRGB(0x80, 0x00, 0x00),//DARK_RED           
CRGB(0xCD, 0x5C, 0x5C),//INDIANS RED
CRGB(0x00, 0x00, 0x00),//BLACK  
};
//      
CRGB pattern11[] = {
CRGB(0xC7, 0x15, 0x85),//MediumVioletRed    
CRGB(0xFF, 0x45, 0x00),//OrangeRed          
CRGB(0xDB, 0x70, 0x93),//PaleVioletRed      
CRGB(0x00, 0x00, 0x00),//BLACK  
};
//
CRGB pattern2[] = {      
CRGB(0x80, 0xFF, 0x80),//LIGHT_GREEN        
CRGB(0x00, 0xFF, 0x00),//GREEN              
CRGB(0x00, 0x80, 0x00),//DARK_GREEN         
CRGB(0x55, 0x6B, 0x2F),//DarkOliveGreen  
CRGB(0x00, 0x00, 0x00),//BLACK  
};
//
CRGB pattern22[] = {      
CRGB(0x8F, 0xBC, 0x8F),//DarkSeaGreen     
CRGB(0x22, 0x8B, 0x22),//ForestGreen           
CRGB(0x7C, 0xFC, 0x00),//LawnGreen            
CRGB(0x00, 0x00, 0x00),//BLACK  
};
//
CRGB pattern3[] = {           
CRGB(0x80, 0xC0, 0xFF),//LIGHT_BLUE       
CRGB(0x00, 0x00, 0xFF),//BLUE               
CRGB(0xF0, 0xF8, 0xFF),//AlLICE BLUE      
CRGB(0x00, 0x00, 0x80),//DARK_BLUE 
CRGB(0x00, 0x00, 0x00),//BLACK  
};
//
CRGB pattern33[] = {               
CRGB(0x00, 0xBF, 0xFF),//DeepSkyBlue      
CRGB(0x5F, 0x9E, 0xA0),//CadetBlue          
CRGB(0x64, 0x95, 0xED),//CornflowerBlue           
CRGB(0x00, 0x00, 0x00),//BLACK  
};
//      
CRGB pattern4[] = {    
CRGB(0xFF, 0xFF, 0xE0),//LightYellow      
CRGB(0xFF, 0xFF, 0x00),//YELLOW             
CRGB(0xFA, 0xFA, 0xD2),//LightGoldenrodYellow  
CRGB(0x00, 0x00, 0x00),//BLACK     
};
//   
CRGB pattern5[] = {         
CRGB(0x8B, 0x00, 0x8B),//DarkMagenta      
CRGB(0xFF, 0x00, 0xFF),//MAGENTA      
CRGB(0x00, 0x00, 0x00),//BLACK 
};
//   
CRGB pattern6[] = {         
CRGB(0x00, 0xFF, 0xFF),//CYAN             
CRGB(0xFF, 0xAF, 0xAF),//PINK           
CRGB(0x60, 0x30, 0x00),//BROWN          
CRGB(0xFF, 0x80, 0x00),//ORANGE  
CRGB(0x00, 0x00, 0x00),//BLACK  
};
//
CRGB pattern66[] = {             
CRGB(0xC0, 0x00, 0xFF),//PURPLE         
CRGB(0x80, 0xFF, 0x00),//LIME           
CRGB(0xFF, 0xFF, 0xFF),//WHITE          
CRGB(0x00, 0x00, 0x00),//BLACK 
};
//
void setup() {
  //randomSeed(analogRead(A0)); // allow for pseudo-random colors
  Serial.begin(115200);

  FastLED.addLeds<WS2812B, MATRIX_PIN, GRB>(leds, NUM_LEDS);
  FastLED.setBrightness(BRIGHTNESS);
  FastLED.clear();
  FastLED.show();

  //pinMode(BUTTON, INPUT_PULLUP);
  //Serial.println("Mash the RED button to start.");
  //while (digitalRead(BUTTON));
}
//
// void loop() { // DaveX-dial code
//   switch (analogRead(A0) * 8 / 1024) {
//     case 0: twinkle(); break;
//     case 1: pewpew(); break;
//     case 2: thealgorithm(); break;
//     case 3: circles(); break;
//     case 4: swirl_1(); break;
//     case 5: swirl_2(); break;
//     case 6: onebyone(); break;
//     case 7: everyone(); break;
//   }
// }
//
void loop() {
  //twinkle();
  //pewpew();
  //thealgorithm();
  //circles();
  //swirl_3();
  //swirl_1();
  swirl_2();
  //onebyone();
  //everyone();
}
//
void twinkle() {
  int x = random(NUM_LEDS);
  leds[x] = CRGB(255, 0, 0);
  FastLED.show();
  delay(10);
  FastLED.clear();
  FastLED.show();
}
//
void swirl_1() {
  int i = 0;
  for (int j = 0; j < STRINGS; j++) {
    int dot = (j * STRING_SIZE) + j + (i * STRINGS);
    for (int k = 0; k < STRINGS; k++) {
      if (dot + k * STRING_SIZE > STRINGS * STRING_SIZE)
        dot = dot - STRINGS * STRING_SIZE;
      leds[dot + k * STRING_SIZE] =  CRGB(
                                       128 + k * 16, // red
                                       255 - (128 + k * 16), // green
                                       64 + k * 8); // blue
      // alto777 code
      // leds[dot + k * STRING_SIZE] = CRGB(
      //   ((sin( 2 * PI * j / NUM_LEDS + 0 * PI / 3 ) * 127 + 128) / 255) * 255,
      //   ((sin( 2 * PI * j / NUM_LEDS + 2 * PI / 3 ) * 127 + 128) / 255) * 255,
      //   ((sin( 2 * PI * j / NUM_LEDS + 4 * PI / 3 ) * 127 + 128) / 255) * 255);
    }
    FastLED.show();
    delay(10);
  }
  // delay(100);
  FastLED.clear();
}
//
void swirl_2() {
  for (int i = 0; i < 2; i++) {
    for (int j = 0; j < STRINGS; j++) {//for( int j= STRINGS - 1; j >= STRINGS; j--) {
      int dot = (j * STRING_SIZE) + j + (i * STRINGS);
      if (dot + 00 > STRINGS * STRING_SIZE)		dot = dot - STRINGS * STRING_SIZE;      leds[dot + 00] =  pattern1;
      if (dot + 16 > STRINGS * STRING_SIZE)		dot = dot - STRINGS * STRING_SIZE;      leds[dot + 16] =  pattern11;
      if (dot + 32 > STRINGS * STRING_SIZE)		dot = dot - STRINGS * STRING_SIZE;      leds[dot + 32] =  pattern2;
      if (dot + 48 > STRINGS * STRING_SIZE)		dot = dot - STRINGS * STRING_SIZE;      leds[dot + 48] =  pattern22;
      if (dot + 64 > STRINGS * STRING_SIZE)		dot = dot - STRINGS * STRING_SIZE;      leds[dot + 64] =  pattern3;
      if (dot + 80 > STRINGS * STRING_SIZE)		dot = dot - STRINGS * STRING_SIZE;      leds[dot + 80] =  pattern33;
      if (dot + 96 > STRINGS * STRING_SIZE)		dot = dot - STRINGS * STRING_SIZE;      leds[dot + 96] =  pattern4;
      if (dot + 112 > STRINGS * STRING_SIZE)	dot = dot - STRINGS * STRING_SIZE;      leds[dot + 112] = pattern5;
      //if (dot + 96 > STRINGS * STRING_SIZE)		dot = dot - STRINGS * STRING_SIZE;      leds[dot + 96] =  pattern6;
      //if (dot + 112 > STRINGS * STRING_SIZE)	dot = dot - STRINGS * STRING_SIZE;      leds[dot + 112] = pattern66;  
      FastLED.show();
      delay(100);
    }
  }
  delay(100);
  FastLED.clear();
}
//
void swirl_3() {
  for (int i = 0; i < 2; i++) {
    for(int j = STRINGS-1; j >= 0; j--) { 
      int dot = (j * STRING_SIZE) + j + (i * STRINGS);
      if (dot + 00 > STRINGS * STRING_SIZE)		dot = dot - STRINGS * STRING_SIZE;      leds[dot + 00] =  pattern1;
      if (dot + 16 > STRINGS * STRING_SIZE)		dot = dot - STRINGS * STRING_SIZE;      leds[dot + 16] =  pattern11;
      if (dot + 32 > STRINGS * STRING_SIZE)		dot = dot - STRINGS * STRING_SIZE;      leds[dot + 32] =  pattern2;
      if (dot + 48 > STRINGS * STRING_SIZE)		dot = dot - STRINGS * STRING_SIZE;      leds[dot + 48] =  pattern22;
      if (dot + 64 > STRINGS * STRING_SIZE)		dot = dot - STRINGS * STRING_SIZE;      leds[dot + 64] =  pattern3;
      if (dot + 80 > STRINGS * STRING_SIZE)		dot = dot - STRINGS * STRING_SIZE;      leds[dot + 80] =  pattern33;
      if (dot + 96 > STRINGS * STRING_SIZE)		dot = dot - STRINGS * STRING_SIZE;      leds[dot + 96] =  pattern4;
      if (dot + 112 > STRINGS * STRING_SIZE)	dot = dot - STRINGS * STRING_SIZE;      leds[dot + 112] = pattern5;
      //if (dot + 96 > STRINGS * STRING_SIZE)		dot = dot - STRINGS * STRING_SIZE;      leds[dot + 96] =  pattern6;
      //if (dot + 112 > STRINGS * STRING_SIZE)	dot = dot - STRINGS * STRING_SIZE;      leds[dot + 112] = pattern66;  
      FastLED.show();
      delay(100);
    }
  }
  delay(100);
  FastLED.clear();
}
//
void pewpew() {
  for (int i = 0; i < STRING_SIZE; i++) {
    for (int j = 0; j < STRINGS; j++) {
      leds[i + j * 16] = CRGB(255, 255, 255);
      FastLED.show();
    }
  }
  delay(10);
  FastLED.clear();
}
//
void thealgorithm() {
  for (int i = 0; i < STRING_SIZE; i++) {
    for (int j = 0; j < STRINGS; j++) {
      leds[i + j * (16 + i)] =  CRGB(0, 127, 255);
      FastLED.show();
      delay(10);
    }
  }
  delay(100);
  FastLED.clear();
}
//
void circles() {
  for (int i = 0; i < STRING_SIZE; i++) {
    for (int j = 0; j < STRINGS; j++) {
      leds[i + j * STRING_SIZE] =  CRGB(255, 0, 255);
      FastLED.show();
      delay(50);
    }
  }
  delay(10);
  FastLED.clear();
}
//
void onebyone() {
  for (int i = 0; i < NUM_LEDS; i++) {
    leds[i] = CRGB(random(256), random(256), random(256));
    FastLED.show();
  }
}
//
void everyone() {
  for (int i = 0; i < NUM_LEDS; i++) {
    leds[i] = CRGB(random(256), random(256), random(256));
  }
  FastLED.show();
}